![]() ![]() This above equation is simple enough to remember, jot down and solve on a scrap piece of paper, but it’s not quite as accurate as some of the other ABV formula’s that are out there. Most homebrewers are probably familiar with the simplest form of the equation:ABV = (og – fg) * 131.25 Over the years there have been a number of different variations of the ABV formula. (yay math!)īelow you’ll find a quick run down on the calculations driving each of the results in the above ABV Calculator. This works because alcohol is less dense than water so by measuring the difference in your beers density before it begins fermentation and creates the (less dense) alcohol you can then measure the alcohol change by volume. When you are using a hydrometer to take these initial measurements, you are essentially measuring the specific gravity(SG) of your beers density as is relative to water. ![]() The above calculator uses your own measurements for Original & Final gravity to determine your homebrewed beers Average Alcohol By Volume. (If you’re into that kind of thing) About The Calculator Make sure to check out the legend at the bottom of this page for more information about each field and the formula’s driving all of the below calculations. This Calculator finds your ABV based off your initial and final gravity readings. ![]()
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